Frequency driven RV video
http://video.google.com.au/videoplay?docid=9089608413203959523
What frequency does it run most efficiently at? I assume you are pulsing it with DC?
Eddy, the more you adjust the Freq the more torque and theoretically, the better efficient(OU) it becomes.
i'm going to adjust it to 5000 RPM soon , i need to find a suitable Freq drive to do it,
Here is another video of using the RV concept to freq drive on a car Alt.
http://video.google.com.au/videoplay?docid=3754961939621506331&hl=en-AU
EDIT-Ooops, sorry Eddy i missed the boat on that last question, Its not pulsed DC its off an inverter which has a custom Freq adjust, it can run eff on any Freq, you have ot tune it to the load requirements , depends on what HP you want really. I still need to test it.,